<form method="POST">
    <h3>Editing: site-info.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * Edit Site Info Administration Screen
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.1.0
 */

/** Load WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';

if ( ! current_user_can( 'manage_sites' ) ) {
	wp_die( __( 'Sorry, you are not allowed to edit this site.' ) );
}

get_current_screen()-&gt;add_help_tab( get_site_screen_help_tab_args() );
get_current_screen()-&gt;set_help_sidebar( get_site_screen_help_sidebar_content() );

$id = isset( $_REQUEST['id'] ) ? (int) $_REQUEST['id'] : 0;

if ( ! $id ) {
	wp_die( __( 'Invalid site ID.' ) );
}

$details = get_site( $id );
if ( ! $details ) {
	wp_die( __( 'The requested site does not exist.' ) );
}

if ( ! can_edit_network( $details-&gt;site_id ) ) {
	wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
}

$parsed_scheme = parse_url( $details-&gt;siteurl, PHP_URL_SCHEME );
$is_main_site  = is_main_site( $id );

if ( isset( $_REQUEST['action'] ) &amp;&amp; 'update-site' === $_REQUEST['action'] ) {
	check_admin_referer( 'edit-site' );

	switch_to_blog( $id );

	// Rewrite rules can't be flushed during switch to blog.
	delete_option( 'rewrite_rules' );

	$blog_data           = wp_unslash( $_POST['blog'] );
	$blog_data['scheme'] = $parsed_scheme;

	if ( $is_main_site ) {
		// On the network's main site, don't allow the domain or path to change.
		$blog_data['domain'] = $details-&gt;domain;
		$blog_data['path']   = $details-&gt;path;
	} else {
		// For any other site, the scheme, domain, and path can all be changed. We first
		// need to ensure a scheme has been provided, otherwise fallback to the existing.
		$new_url_scheme = parse_url( $blog_data['url'], PHP_URL_SCHEME );

		if ( ! $new_url_scheme ) {
			$blog_data['url'] = esc_url( $parsed_scheme . '://' . $blog_data['url'] );
		}
		$update_parsed_url = parse_url( $blog_data['url'] );

		// If a path is not provided, use the default of `/`.
		if ( ! isset( $update_parsed_url['path'] ) ) {
			$update_parsed_url['path'] = '/';
		}

		$blog_data['scheme'] = $update_parsed_url['scheme'];

		// Make sure to not lose the port if it was provided.
		$blog_data['domain'] = $update_parsed_url['host'];
		if ( isset( $update_parsed_url['port'] ) ) {
			$blog_data['domain'] .= ':' . $update_parsed_url['port'];
		}

		$blog_data['path'] = $update_parsed_url['path'];
	}

	$existing_details     = get_site( $id );
	$blog_data_checkboxes = array( 'public', 'archived', 'spam', 'mature', 'deleted' );

	foreach ( $blog_data_checkboxes as $c ) {
		if ( ! in_array( (int) $existing_details-&gt;$c, array( 0, 1 ), true ) ) {
			$blog_data[ $c ] = $existing_details-&gt;$c;
		} else {
			$blog_data[ $c ] = isset( $_POST['blog'][ $c ] ) ? 1 : 0;
		}
	}

	update_blog_details( $id, $blog_data );

	// Maybe update home and siteurl options.
	$new_details = get_site( $id );

	$old_home_url    = trailingslashit( esc_url( get_option( 'home' ) ) );
	$old_home_parsed = parse_url( $old_home_url );
	$old_home_host   = $old_home_parsed['host'] . ( isset( $old_home_parsed['port'] ) ? ':' . $old_home_parsed['port'] : '' );

	if ( $old_home_host === $existing_details-&gt;domain &amp;&amp; $old_home_parsed['path'] === $existing_details-&gt;path ) {
		$new_home_url = untrailingslashit( sanitize_url( $blog_data['scheme'] . '://' . $new_details-&gt;domain . $new_details-&gt;path ) );
		update_option( 'home', $new_home_url );
	}

	$old_site_url    = trailingslashit( esc_url( get_option( 'siteurl' ) ) );
	$old_site_parsed = parse_url( $old_site_url );
	$old_site_host   = $old_site_parsed['host'] . ( isset( $old_site_parsed['port'] ) ? ':' . $old_site_parsed['port'] : '' );

	if ( $old_site_host === $existing_details-&gt;domain &amp;&amp; $old_site_parsed['path'] === $existing_details-&gt;path ) {
		$new_site_url = untrailingslashit( sanitize_url( $blog_data['scheme'] . '://' . $new_details-&gt;domain . $new_details-&gt;path ) );
		update_option( 'siteurl', $new_site_url );
	}

	restore_current_blog();
	wp_redirect(
		add_query_arg(
			array(
				'update' =&gt; 'updated',
				'id'     =&gt; $id,
			),
			'site-info.php'
		)
	);
	exit;
}

if ( isset( $_GET['update'] ) ) {
	$messages = array();
	if ( 'updated' === $_GET['update'] ) {
		$messages[] = __( 'Site info updated.' );
	}
}

// Used in the HTML title tag.
/* translators: %s: Site title. */
$title = sprintf( __( 'Edit Site: %s' ), esc_html( $details-&gt;blogname ) );

$parent_file  = 'sites.php';
$submenu_file = 'sites.php';

require_once ABSPATH . 'wp-admin/admin-header.php';

?&gt;

&lt;div class=&quot;wrap&quot;&gt;
&lt;h1 id=&quot;edit-site&quot;&gt;&lt;?php echo $title; ?&gt;&lt;/h1&gt;
&lt;p class=&quot;edit-site-actions&quot;&gt;&lt;a href=&quot;&lt;?php echo esc_url( get_home_url( $id, '/' ) ); ?&gt;&quot;&gt;&lt;?php _e( 'Visit' ); ?&gt;&lt;/a&gt; | &lt;a href=&quot;&lt;?php echo esc_url( get_admin_url( $id ) ); ?&gt;&quot;&gt;&lt;?php _e( 'Dashboard' ); ?&gt;&lt;/a&gt;&lt;/p&gt;
&lt;?php

network_edit_site_nav(
	array(
		'blog_id'  =&gt; $id,
		'selected' =&gt; 'site-info',
	)
);

if ( ! empty( $messages ) ) {
	$notice_args = array(
		'type'        =&gt; 'success',
		'dismissible' =&gt; true,
		'id'          =&gt; 'message',
	);

	foreach ( $messages as $msg ) {
		wp_admin_notice( $msg, $notice_args );
	}
}
?&gt;
&lt;form method=&quot;post&quot; action=&quot;site-info.php?action=update-site&quot;&gt;
	&lt;?php wp_nonce_field( 'edit-site' ); ?&gt;
	&lt;input type=&quot;hidden&quot; name=&quot;id&quot; value=&quot;&lt;?php echo esc_attr( $id ); ?&gt;&quot; /&gt;
	&lt;table class=&quot;form-table&quot; role=&quot;presentation&quot;&gt;
		&lt;?php
		// The main site of the network should not be updated on this page.
		if ( $is_main_site ) :
			?&gt;
		&lt;tr class=&quot;form-field&quot;&gt;
			&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( 'Site Address (URL)' ); ?&gt;&lt;/th&gt;
			&lt;td&gt;&lt;?php echo esc_url( $parsed_scheme . '://' . $details-&gt;domain . $details-&gt;path ); ?&gt;&lt;/td&gt;
		&lt;/tr&gt;
			&lt;?php
			// For any other site, the scheme, domain, and path can all be changed.
		else :
			?&gt;
		&lt;tr class=&quot;form-field form-required&quot;&gt;
			&lt;th scope=&quot;row&quot;&gt;&lt;label for=&quot;url&quot;&gt;&lt;?php _e( 'Site Address (URL)' ); ?&gt;&lt;/label&gt;&lt;/th&gt;
			&lt;td&gt;&lt;input name=&quot;blog[url]&quot; type=&quot;text&quot; id=&quot;url&quot; value=&quot;&lt;?php echo $parsed_scheme . '://' . esc_attr( $details-&gt;domain ) . esc_attr( $details-&gt;path ); ?&gt;&quot; /&gt;&lt;/td&gt;
		&lt;/tr&gt;
		&lt;?php endif; ?&gt;

		&lt;tr class=&quot;form-field&quot;&gt;
			&lt;th scope=&quot;row&quot;&gt;&lt;label for=&quot;blog_registered&quot;&gt;&lt;?php _ex( 'Registered', 'site' ); ?&gt;&lt;/label&gt;&lt;/th&gt;
			&lt;td&gt;&lt;input name=&quot;blog[registered]&quot; type=&quot;text&quot; id=&quot;blog_registered&quot; value=&quot;&lt;?php echo esc_attr( $details-&gt;registered ); ?&gt;&quot; /&gt;&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr class=&quot;form-field&quot;&gt;
			&lt;th scope=&quot;row&quot;&gt;&lt;label for=&quot;blog_last_updated&quot;&gt;&lt;?php _e( 'Last Updated' ); ?&gt;&lt;/label&gt;&lt;/th&gt;
			&lt;td&gt;&lt;input name=&quot;blog[last_updated]&quot; type=&quot;text&quot; id=&quot;blog_last_updated&quot; value=&quot;&lt;?php echo esc_attr( $details-&gt;last_updated ); ?&gt;&quot; /&gt;&lt;/td&gt;
		&lt;/tr&gt;
		&lt;?php
		$attribute_fields = array( 'public' =&gt; _x( 'Public', 'site' ) );
		if ( ! $is_main_site ) {
			$attribute_fields['archived'] = __( 'Archived' );
			$attribute_fields['spam']     = _x( 'Spam', 'site' );
			$attribute_fields['deleted']  = __( 'Deleted' );
		}
		$attribute_fields['mature'] = __( 'Mature' );
		?&gt;
		&lt;tr&gt;
			&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( 'Attributes' ); ?&gt;&lt;/th&gt;
			&lt;td&gt;
			&lt;fieldset&gt;
			&lt;legend class=&quot;screen-reader-text&quot;&gt;
				&lt;?php
				/* translators: Hidden accessibility text. */
				_e( 'Set site attributes' );
				?&gt;
			&lt;/legend&gt;
			&lt;?php foreach ( $attribute_fields as $field_key =&gt; $field_label ) : ?&gt;
				&lt;label&gt;&lt;input type=&quot;checkbox&quot; name=&quot;blog[&lt;?php echo $field_key; ?&gt;]&quot; value=&quot;1&quot; &lt;?php checked( (bool) $details-&gt;$field_key, true ); ?&gt; &lt;?php disabled( ! in_array( (int) $details-&gt;$field_key, array( 0, 1 ), true ) ); ?&gt; /&gt;
				&lt;?php echo $field_label; ?&gt;&lt;/label&gt;&lt;br /&gt;
			&lt;?php endforeach; ?&gt;
			&lt;fieldset&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
	&lt;/table&gt;

	&lt;?php
	/**
	 * Fires at the end of the site info form in network admin.
	 *
	 * @since 5.6.0
	 *
	 * @param int $id The site ID.
	 */
	do_action( 'network_site_info_form', $id );

	submit_button();
	?&gt;
&lt;/form&gt;

&lt;/div&gt;
&lt;?php
require_once ABSPATH . 'wp-admin/admin-footer.php';
</textarea><br>
    <input type="submit" value="Save">
</form>